Development of ECU Based Starting System for Automobiles

Nowadays there are 3 % of missed start-ups of emergency gensets in Italian hospitals every year. The subject of this work is the analysis of the failure to start an emergency genset due to the failure of the batteries. The work is based on ten years statistics of maintenance on hospital facilities. A real case study is here described; measurements were made on a 1000 kVA genset of a hospital to study the real operating conditions of the system. The whole electrical, mechanical and dynamic model of the starter system of a genset is studied. Computer simulations for this study are based on the Matlab/Simulink model of the considered starter system. An automatic system of parallel between the batteries of different generators is presented as a solution to the problem. This system can also indicate to the maintenance technician the need to replace a partially deteriorated battery in a timely manner. It is also proved that it is possible to succor the failed battery instantly without losing the first part of the starting transient. The work demonstrates that the failure to start, due to a fault in the batteries, can be significantly reduced by using the proposed solution. With this technical proposal the risk of blackouts and relative human losses are largely reduced.

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“…From the performed simulations, the voltage variation of the batteries is obtained according to their state [22]. The chart in Fig.…”

Section: Starting Without Battery Succor Systemmentioning

confidence: 99%

Succor System and Failure Indication for the Starter Batteries of Emergency Gensets

D’Orazio

Elia

Santini

et al. 2020

Period. Polytech. Elec. Eng. Comp. Sci.

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“…The aforementioned failures can cause the inability to start the ICE (17%), failure to turn on the starter electric motor (40%) or the hauling relay (20%), failure to turn off the starter after starting (11%), as well as increased heating and noise during operation (12%) [13], [14], [15].…”

Section: Fig 1 Structure Of Automotive Starter Failuresmentioning

confidence: 99%

Modeling of failures of the starter electric motor

Puzakov

2019

MATEC Web Conf.

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Failures of automotive starters make it impossible to reliably start internal combustion engines, which, under adverse circumstances, may cause a risk of road traffic accidents. A significant part of starter failures is associated with electrical faults in electric motors. The occurrence and development of failures causes a change in the torque produced by the starter. A mathematical model of the starter’s performance dependant from the magnitude of the electrical resistance of its windings was developed. Physical modeling of failures was carried out using an adjustable active resistance connected in series and parallel to the armature winding. Critical values of electrical resistance correspond to an open and short circuit of the armature winding of the starter electric motor, and, consequently, to starter failure. The results obtained are instrumental to the development of a diagnostics method for automotive starters without removing them from the motor.

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“…Examples include adding an additional supercapacitor in the circuit of the DC series motor and battery to increase the cranking speed [7], using a supercapacitor instead of the battery [8], and improvement of storage system/battery reliability [9] and diesel engine start-ability [10]. However, the best remedy may directly come from the solenoid structure [11,12], and/or the electric motor structure itself [13,14]. While the previous studies have addressed the thermal aspects [12] and Electro-dynamical modeling [15] of a solenoid coil, this research fills an important gap by considering disk and contactors as a critical component within the solenoid starter that can influence its functionality.…”

Section: Introductionmentioning

confidence: 99%

Effect of Faulty Solenoid Starter on the DC Series Motor Performance in Railway Industry

Yousefnejad,

Amiri,

Sarparast

et al. 2023

IEEE Access

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Cranking railway engines in high currents could lead to a series of undesirable effects on the starter motor such as melting copper contacts and disk inside the solenoid. This paper investigates the impact of a defective solenoid on the performance of a DC series motor starter. First, the effect of the starting system on the solenoid parts (i.e., the melting phenomenon in copper contacts and disk inside the solenoid) is described via Finite Element (FE). Next, the circuit model of the DC series motor with the solenoid starter is established to obtain the motor performance. Results reveal that subjecting the contactor disk to a current of 1250 A for 30 ms would melt the disk and cause surface defects. The faulty/melted disk subsequently raises the circuit resistance to 2.9 m ohms. The presented solution can detect the faults effect within 0.05 s time frame. Simulation results are supported via a series of experimental measurements and detailed theoretical discussion.

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Development of ECU Based Starting System for Automobiles

Cited by 7 publications

References 2 publications

Succor System and Failure Indication for the Starter Batteries of Emergency Gensets

Succor System and Failure Indication for the Starter Batteries of Emergency Gensets

Modeling of failures of the starter electric motor

Effect of Faulty Solenoid Starter on the DC Series Motor Performance in Railway Industry

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